Ransom
Burton Meredith, A young, U.S. government chemist discovers a formula for a deadly gas. But Wo Fang, the evil leader of the Chinatown underground sets out to steal the secret, using very foul and foul means he knows. And Wu Fang knows them all.
Directors: George B. Seitz
Writers: Dorothy Howell, Elmer Harris, George B. Seitz, Mort Blumenstock
IMDB: tt0019307